PLoS ONE (Jan 2024)

Underwater target laser polarization suppression scattering detection technology and verification.

  • Qiang Fu,
  • Chao Dong,
  • Kaikai Wang,
  • Qingyi He,
  • Xiansong Gu,
  • Jianhua Liu,
  • Yong Zhu,
  • Jin Duan

DOI
https://doi.org/10.1371/journal.pone.0305929
Journal volume & issue
Vol. 19, no. 6
p. e0305929

Abstract

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The underwater laser polarization detection technology integrates the polarization characteristics of light into the detection and identification of underwater targets. Addressing the challenge of poor accuracy in identifying targets in strong underwater scattering environments, this article proposes an overall scheme for a laser polarization underwater detection device that suppresses scatter using polarized pulse signals. By overcoming key technological barriers in the design of polarization-preserving optical detection systems and utilizing the method of differential amplitude to measure polarization, a laser polarization underwater detection device was developed and underwater polarization detection experiments were conducted, achieving precise detection of underwater targets. The results indicate that the underwater detection device we designed has a root mean square error of less than 5.7% to detect the polarization of the target, demonstrating the accuracy and precision of the underwater detection device.